Station Name: CHAPEL HILL 2W, NC WMO Station Number: National I.D. Number: 00311677 Country: UNITED STATES OF AMERICA WMO Region: REGION IV - NORTH & CENTRAL AMERICA Latitude: 35d 55m N Longitude: 079d 06m W Elevation: 152 m In the following tables, byr = beginning year of normals or extremes data period eyr = ending year of normals or extremes data period NA = Not Applicable, data not submitted or not computed * = value > 0 but < units resolution Ann-NCDC = annual value computed by NCDC from monthly values provided by Members ========================================================== The normals data and climate variable descriptions are presented in these tables as provided by the WMO Member country. ========================================================== Element 01: Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value #_YEARS (Statistic 98): Number of Years used to Calculate Normal -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MEAN #_YEARS Month -------------------------- Jan 2.9 30 Feb 4.6 30 Mar 9.4 30 Apr 14.4 30 May 18.7 30 Jun 22.8 30 Jul 24.9 30 Aug 24.3 30 Sep 20.8 30 Oct 14.6 30 Nov 10.0 30 Dec 5.0 30 Annual 14.4 30 Ann-NCDC 14.4 NA -------------------------- Element 02: Maximum Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value #_YEARS (Statistic 98): Number of Years used to Calculate Normal -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MEAN #_YEARS Month -------------------------- Jan 9.2 30 Feb 11.2 30 Mar 16.4 30 Apr 21.8 30 May 25.7 30 Jun 29.4 30 Jul 31.5 30 Aug 30.8 30 Sep 27.6 30 Oct 22.1 30 Nov 17.3 30 Dec 11.4 30 Annual 21.2 30 Ann-NCDC 21.2 NA -------------------------- Element 03: Minimum Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value #_YEARS (Statistic 98): Number of Years used to Calculate Normal -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MEAN #_YEARS Month -------------------------- Jan -3.5 30 Feb -2.2 30 Mar 2.4 30 Apr 6.9 30 May 11.8 30 Jun 16.2 30 Jul 18.3 30 Aug 17.8 30 Sep 14.0 30 Oct 7.1 30 Nov 2.7 30 Dec -1.5 30 Annual 7.5 30 Ann-NCDC 7.5 NA -------------------------- Element 06: Precipitation (mm) MEANMLY (Statistic 15): Mean Monthly Value MIN_MLY (Statistic 20): Minimum Monthly Value QUIN20% (Statistic 22): First Quintile QUIN40% (Statistic 23): Second Quintile QUIN60% (Statistic 24): Third Quintile QUIN80% (Statistic 25): Fourth Quintile MAX_MLY (Statistic 26): Maximum Monthly Value #_YEARS (Statistic 98): Number of Years used to Calculate Normal -------------------------------------------------------------------------- byr: 1961 1961 1961 1961 1961 1961 1961 1961 eyr: 1990 1990 1990 1990 1990 1990 1990 1990 Statistic: MEANMLY MIN_MLY QUIN20% QUIN40% QUIN60% QUIN80% MAX_MLY #_YEARS Month -------------------------------------------------------------------------- Jan 95.0 30.2 53.1 75.4 99.1 132.3 210.3 30 Feb 98.3 13.5 56.9 79.2 102.6 135.1 171.7 30 Mar 106.9 38.9 66.8 89.2 112.3 143.5 201.9 30 Apr 81.8 18.5 45.7 64.8 85.1 113.8 145.0 30 May 114.3 36.6 74.9 97.3 119.9 150.1 193.5 30 Jun 111.3 22.4 60.2 87.1 115.6 156.2 258.1 30 Jul 102.9 6.9 44.2 72.1 104.6 152.9 213.6 30 Aug 112.8 29.0 64.0 90.2 117.6 156.2 229.6 30 Sep 81.3 2.3 23.9 47.5 78.2 127.8 239.0 30 Oct 88.1 9.4 37.3 61.5 89.4 131.3 246.1 30 Nov 88.6 15.7 36.6 61.0 89.7 132.8 319.0 30 Dec 87.6 7.9 45.2 67.1 90.9 124.7 181.6 30 Annual 1168.9 NA NA NA NA NA NA 30 Ann-NCDC 1168.9 NA NA NA NA NA NA NA --------------------------------------------------------------------------